Nadab and Abihu

In the biblical books of Exodus, Leviticus and Numbers, Nadav (Hebrew: נָדָב, Modern: Nadav, Tiberian: Nāḏāḇ, "generous") and Avihu (Hebrew: אֲבִיהוּא, Modern: ʾAvīhūʾ, Tiberian: ʾĂḇīhūʾ, "my father [is] he") were the two oldest sons of Aaron.^[1] According to Third reading—Leviticus 9:24–10:11|Leviticus 10, they offered a sacrifice with "foreign fire" before Yahweh, disobeying his instructions, and were immediately consumed by fire.

Moses instructed Aaron and his family not to mourn, although the people at large were permitted.^[2]